A new class of bulk viscous universe with time dependent deceleration parameter and Λ-term |
| |
Authors: | Anirudh Pradhan Saeed Otarod |
| |
Institution: | (1) Department of Physics, Yasouj University, Yasouj, Iran;(2) Department of Mathematics, Hindu Post-graduate College, Zamania, 232 331, Ghazipur, India |
| |
Abstract: | A new class of exact solutions of Einstein’s field equations with a bulk viscous fluid for an LRS Bianchi type-Ia obtained
by using a time dependent deceleration parameter and cosmological term Λ. The coefficient of bulk viscosity is assumed to
be a power function of mass density (ξ=ξ
0
ρ
n
). We have obtained a general solution of the field equations from which six models of the universe are derived: exponential,
polynomial and sinusoidal form respectively. The behaviour of these models of the universe are also discussed in the frame
of reference of recent supernovae Ia observations.
|
| |
Keywords: | Cosmology Deceleration parameter Variable cosmological term |
本文献已被 SpringerLink 等数据库收录! |
|